MRO finds more recently-deposited water-bearing minerals on Mars.
Mars Rovers Spirit and Opportunity are 6-wheeled, remotely operated explorers on the planet Mars. Learn more about Mars exploration and how the Spirit and Opportunity rovers are doing.
After a two-year stay in Mar's Victoria Crater, NASA's Opportunity rover will be moving on to an even bigger playground.
Phoenix takes first image of single dust particle; highest magnification image ever taken off Earth.